AVERROES: Apixaban yields significant reductions in stroke, no increased bleeding
Patients with atrial fibrillation unable to take warfarin who are treated with apixaban (Pfizer/Bristol-Myers Squibb), an investigational oral factor Xa inhibitor, had a significantly lower risk of stroke and systemic embolic events compared with patients treated with aspirin. Importantly, the benefits of apixaban did not come at a cost of increased bleeding, with no observed increases in the risk of major bleeding, minor bleeding, or intracranial hemorrhage, among other end points, in those treated with apixaban. Outcomes Apixaban (n=2809) Aspirin (n=2791) Relative risk (95%CI) Stroke or systemic embolic event 1.6 3.6 0.46 (0.33-0.64) Stroke, embolic event, MI, or vascular death 4.1 6.2 0.66 (0.53-0.83) MI 0.7 0.8 0.85 (0.48-1.50) ...